Recently, multiple programming languages (such as Java, Python, C++) are often used together in the large-scale software development process, since different development tasks often use different programming languages.
When developers ask questions on Stack Overflow [1]}[2]}, the answers to the questions are closely related to the type of programming language. Therefore, Stack Overflow needs to use the correct programming language tag of posts to match the related answers for users, and the source code classification task can effectively solve this problem.
